Elektrik - Elektronik Mühendisliği Bölümü Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/47

Browse

Browsing Elektrik - Elektronik Mühendisliği Bölümü Koleksiyonu by Journal "2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU)"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Conference Object
    Citation - Scopus: 1
    The Effect Of Channel Resolution On Compressed Sensing Based Ultra-wideband Channel Estimation [kanal Çözünürlü?ünün Sıkıştırılmış Algılama Tabanlı Ultra Geni?ş Bantlı Kanal Kesti?ri?mi?ne Etki?si?]
    (2011) Başaran, Mehmet; Erküçük, Serhat; Cirpan, Hakan Ali
    Ultra short pulses are transmitted in Ultra-Wideband (UWB) communications. As a result of this pulses at the receiver can be resolved individually due to the sparse structure of the channel. Due to these properties the UWB channel can be estimated by using a compressed sensing based channel estimation method. The performance of channel estimation depends on the sparsity of the channel. In this work the effect of channel resolution which directly affects the sparsity is examined. It is shown that the channel becomes more sparse and the channel estimation performance is improved with increased channel resolution. Also the system performances of practically used selective-Rake receivers with estimated channels are found to be close to the perfect channel estimation case. © 2011 IEEE.
  • Thumbnail Image
    Conference Object
    Trellis Coding For Spatial Modulation [uzaysal Modulasyon İ?çi?n Kafes Kodlama]
    (2011) Basar, Ertugrul; Aygölü, Ümit; Panayırcı, Erdal; Poor, H. Vincent
    In this study by combining trellis coding with spatial modulation (SM) a new multiple-input multiple output (MIMO) communication scheme called trellis coded spatial modulation (TC-SM) is proposed. For uncorrelated Rayleigh fading channels code design criteria are given by deriving pairwise error probability (PEP) of this system in which a trellis encoder and SM mapper are jointly designed. These criteria are then used to obtain 4 8 and 16-states TC-SM schemes. It is shown via computer simulations that the proposed TC-SM schemes achieve better error performance than the classical space-time trellis codes with reduced decoder complexity. © 2011 IEEE.